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Standards GB - Chinese national standards - Page 5531
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
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GB 1128-1985
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Inserted blade side milling cutters
WITHDRAWN published on 1.1.1985
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GB 11280-1989
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Detail specification for electronic components--Electromechanical all-or-nothing relays of assessed quality--Test schedules 3--Model JZC-21F DC electromagnetic relays
WITHDRAWN published on 1.1.1989
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GB/T 11281-1989
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Reduction gearhead series of electrical micro-machine for automatic control system
WITHDRAWN published on 31.3.1989
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GB 11282.1-1989
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B series pneumatic field mounted controllers--Level instrument
WITHDRAWN published on 1.1.1989
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GB 11282.2-1989
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B series pneumatic field mounted controllers--Pressure instrument
WITHDRAWN published on 1.1.1989
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GB 11282.3-1989
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B series pneumatic field mounted controllers--Temperature instrument
WITHDRAWN published on 1.1.1989
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GB 11282.4-1989
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B series pneumatic field mounted controllers--Differential pressure instrument
WITHDRAWN published on 1.1.1989
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GB 11282.5-1989
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B series pneumatic field mounted controllers--3-pens recording instrument
WITHDRAWN published on 1.1.1989
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GB 11283-1989
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The characteristic parameter of a diffuse reflective projection screen
WITHDRAWN published on 1.1.1989
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GB 11284-1989
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The characteristic parameter of a collective gain reflective projection screen
WITHDRAWN published on 1.1.1989
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